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Welcome to PTC Metrology™
PTC Metrology™ is the calibration laboratory of PTC® Instruments, the world's leading manufacturer of durometers and bimetal surface thermometers.
PTC® has been performing calibrations for more than 50 years. John Marcus, Ph.D. is the Technical Director. He brings his training in experimental physics and
thermodynamics to bear directly on PTC Metrology™
, keeping it technically competent and up to date. Greg Ikuta is the Quality Manager having been directly involved
in QA and calibration since 1988.
PTC Metrology™
is accredited by A2LA to ISO/IEC 17025, ANSI/NCSL Z540-1. Our certificate number 1896.01 from A2LA covers calibration of...
In keeping with the worldwide demand for accredited calibrations, PTC Metrology™ has chosen A2LA as our accrediting body.
Click on the link to view our scope of our accreditation.
If you need an RMA number to return an instrument for calibration, repair and/or written certification, please fill out our Return Authorization Form
or call customer service at 877.782.2329
The Scope of PTC Metrology™ Accreditation
The scope of PTC®'s accreditation is intended to satisfy the traceability and other requirements for ongoing company operations, research requirements, and customer support for
durometer calibration to most if not all durometer standards worldwide. In the United States, A2LA and NVLAP have only accredited a handful of laboratories with a complete scope to
calibrate all the required aspects of durometer calibration ( see for example ASTM D2240 ). PTC Metrology™ is however, accredited for all durometer parameters.
Durometer Calibration
In durometer calibration this includes optical comparison for checking indenter geometry, load cells and duro calibrators for measuring the force curve, and gage blocks to check
indenter extension and gage linearity. This includes all attributes listed in ASTM D2240 and other international standards. PTC Metrology™ was A2LA accredited in March, 2002
(Cert # 1896.01)
Durometer Metrology
A2LA Accredited for Durometer Calibration PTC METROLOGY™ Uses NIST Traceable Standards and Meets the Requirements of:
- ISO/IEC Guide 17025
- ANSI/NCSL Z540-1
Temperature Calibration
In temperature calibration, PTC® has chosen primarily products from Hart Scientific, which supplies most national and international standards labs with calibration equipment.
The Hart Scientific Super Thermometer is center stage along with its SPRT featuring calibration traceable to the fixed points of the ITS-90 temperature scale.
A water triple point cell (0.01°C ±0.0001) is used to correct any drift that the SPRT may experience on an ongoing basis.
At the low temperatures a liquid nitrogen comparator is used at -196°C, followed by various stirred baths and topped at the high end by a large 1200°C black body source.
Thermocouples are handled by a Hart Scientific Black Stack and TC Furnace while thermistors can be measured with the Hart Scientific Super Thermometer.
LIG can be accurately measured in stirred baths with level adapters designed for LIG. Surface temperature is measured using a Hart Scientific model 3125 calibrator with a
microprocessor based controller for accuracy and stability.
Thermometer Metrology
A2LA Accredited for Temperature Calibration PTC METROLOGY™ Uses NIST Traceable Standards and Meets the Requirements of:
- ISO/IEC Guide 17025
- ANSI/NCSL Z540-1
Pressure Certification
Our lab offers pressure calibration from 6 to 12140 PSIG with an uncertainty of 50 parts in 106 with a Ruska 2400 HL Deadweight Tester. Our laboratory has the capabilities to calibrate general
purpose gauges, utility, industrial and process gauges, test gauges, pressure recorders and data loggers.
Pressure Metrology
A2LA Accredited for Pressure Calibration PTC METROLOGY™ Uses NIST Traceable Standards and Meets the Requirements of:
- ISO/IEC Guide 17025
- ANSI/NCSL Z540-1
What's in it for You?
First, since accreditation involves a third party assessment of a laboratory's QA program and technical capabilities, it provides an impartial viewpoint of the competency of the laboratory.
It also provides an unbiased assessment of the laboratory's standards, procedures, personnel qualifications and traceability to an appropriate national laboratory.
In the United States, this means traceability of all standards to NIST. By showing traceability to NIST, it shows traceability that is accepted worldwide.
In short, accreditation offers the lab's customers a high level of confidence in its quality and technical abilities.
Second, because ISO 9000 includes calibration requirements, many companies include accreditation for calibration suppliers as a mandatory part of their QA system.
Often, accredited suppliers need only remit a copy of their accreditation scope in order to become an approved vendor. This eliminates the need for time-consuming, expensive audits and
other supplier evaluation methods. Further, in cases where customers' audits are still necessary, the audits run smoother when accredited suppliers are used.
In regard to temperature, PTC Metrology™ has received accreditation from A2LA. PTC®'s temperature laboratory is equipped with primary and secondary standards, precision readouts, standard resistors
and other related test equipment. For a complete list of our laboratory equipment, please click on the link below.
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